Remove implicit scoped_refptr operator T*

chrome/service/cloud_print/cloud_print_proxy_backend.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/service/cloud_print/cloud_print_proxy_backend.h"
 
 #include <map>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 157 matching lines @@
     const gaia::OAuthClientInfo& oauth_client_info,
     bool enable_job_poll)
       : core_thread_("Chrome_CloudPrintProxyCoreThread"),
         frontend_loop_(MessageLoop::current()),
         frontend_(frontend) {
   DCHECK(frontend_);
   core_ = new Core(this, settings, oauth_client_info, enable_job_poll);
 }
 
 CloudPrintProxyBackend::~CloudPrintProxyBackend() {
-  DCHECK(!core_);
+  DCHECK(!core_.get());
 }
 
 bool CloudPrintProxyBackend::InitializeWithLsid(
     const std::string& lsid,
     const std::string& last_robot_refresh_token,
     const std::string& last_robot_email,
     const std::string& last_user_email) {
   if (!core_thread_.Start())
     return false;
   core_thread_.message_loop()->PostTask(
@@ skipping 380 matching lines @@
   if (0 == base::strcasecmp(kCloudPrintPushNotificationsSource,
                             notification.channel.c_str()))
     HandlePrinterNotification(notification.data);
 }
 
 void CloudPrintProxyBackend::Core::OnPingResponse() {
   pending_xmpp_pings_ = 0;
   VLOG(1) << "CP_CONNECTOR: Ping response received.";
 }